Showing posts with the label mx records

DELIVTERMS: MX Record

Today on DELIVTERMS , the series here on Spam Resource where we help you decode deliverability and email terminology, we're looking at one of the core components of how email actually finds its way to your inbox. A foundational DNS record that helps direct the traffic behind the scenes. The term: MX Record. It might seem basic and obvious to some, but not everybody knows every concept of…
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Fun with data: Yahoo Mail, by the numbers

By one reckoning, Yahoo Mail apparently has 225 million active users . That's nothing to sneeze at. And they've been there since nearly the beginning of webmail, having acquired Rocketmail in 1997 to become the foundation of what we now know of as Yahoo Mail. And nowada…

Fun with data: Mimecast, by the numbers

Just a quick little peek at data today. This time around, it's month-by-month counts of MX records, in the top ten million domains, that point at servers with "Mimecast" in the domain name referenced in those records. Mimecast is a secure email gateway (SEG) platf…

Fun with Data: Ranking mailbox providers in .edu

Time for fun with a smaller data set! In my most recent snapshot of the top ten million domains list, just over 4200 of them are domains ending in the ".edu" TLD. The .edu top level domain is a small one, with nowhere near the many millions of domains registered under…

Who hosts mail for more domains: Microsoft or Google?

Time to slice and dice my favorite dataset: the top ten million domains list. This thing provides me with endless fun and joy. Tracking something over time provides unique insight into growth of mail provider reach, authentication protocol reach, insight into which providers a…

Fun with data: Apple Domains

For a fun little multi mini-snapshot of MX domain data, let's take a look at Apple. What do they host, mail-wise, for who and for what domains? Wombatmail Data to the rescue! Let's see what we can pull out from the top ten million domains. Corporate mail domains hosted…

MX records changing for Microsoft-hosted domains ... eventually

If you're one of those weirdos (like me) who tracks what email providers hosts mail for what domains, you'll want to take note of this. In the email industry's ongoing efforts to improve email security, Microsoft is adding the ability for Microsoft-hosted domains to…

Microsoft errors: 5.4.4 (unable to route: no mail hosts for domain)

When sending to Microsoft OLC (Outlook Consumer - i.e. hotmail.com, outlook.com, msn.com, live.com, etc.) domains, are you seeing this bounce message? Microsoft: 5.4.4 (unable to route: no mail hosts for domain) If you're seeing that error message, or something similar, her…

B2B spam filters and domain blocking: Who blocked my mail?

Let's compare B2C versus B2B deliverability issues, shall we? In the B2C (business-to-consumer) or DTC (direct-to-consumer) email marketing universe, the number of mailbox providers, while broad, is very heavily concentrated in the US. There are six providers, that when you…

AOL Announces Mail System MX Changes

As expected, AOL announced yesterday that the MX records for their domains are being updated: As AOL and Yahoo come together under the OATH umbrella, we will merge the mail infrastructure serving our consumer brands. As a first step, starting this week, the majority of AOL…

Hotmail UK MX Change

The MX servers for Hotmail UK changed in DNS overnight. For those who are caching DNS or have hard coded DNS entries, you're going to run into problems with false positive "user unknown" bounces. Time to flush the cache and make sure you're relying on what'…